Spraying apparatus



June 1 1 926. 1,586,997

' A B.|4L" L SPRAYING APPARATUS Filed April 10, 1922 W /Nl/EIVTOR M AM BY M

A TTOR/VE V been to provide a device ofthis nature, in

' radial planes extending through the axes of Patented June 1, 1926.

ARTHUR B. HULL, OF GAS POBT, NEW YORK.'

srnarmo nrrnna'rus.

Application filed April 10, 1922. Serial 1T0. 550,949.

My invention relates generally to spraying devices, and more particularly to devices of this nature which are used for spraying insecticides upon foliage.

As is well known to those skilled in the art, the devices used at present for spraying insecticides upon foliage employ a spray gun. This spray gun ,is provided at its outer end with a spray nozzle, and appliances must be used for creating and maintaining a high pressure upon the insecticide in order that it may be forced from'the spray nozzle with sufiicient velocity to cause it to be properly atomized. It is well known that such a pressure system is not only expensive to install, but costly to, maintain in operation; Furthermore, the spray from such a nozzle is limited to a comparatively small area. i

The principalobject of my invention has which comparatively low pressures may be used in the insecticide supply pipe, thus dispensing with the costly apparatus necessary to produce and maintain the high pressure of present-day devices.

Another object has been to provide a device which shall be provided with a plurality of spray nozzles, whereby a fog, or finely atomized spray duced and sprayed over a comparatively large area.

Moreover, my invention contemplates the use of a fan in connection with the spray nozzles, whereby the fog produced b the nozzles may be conveyed and distributed over a widely spread area. i

It has also been an object to produce a device in which the spray nozzles shall be located some distance from their axes of rotation, whereby the centrifugal action produced by the passage of the fluid towardthe rotating nozzle shall produce the necessary pressure the fluid at the nozzle.

Furthermore, my invention rovides means for adjusting the position 0 the device so as to direct the flow of fog produced thereby,

lime to the rapid rotation of the nozzles through the air, a slight suction will be reduced at the mouths of the nozzles if the axes thereof are coincident with the the shaft, or if they lean slightly backwards. This will further assist in increasing the pressure of the insecticide and in atomizing the same which will not be the case if the nozzles lean forwardly. V

The above objects and advantages, have been accomplished by the device s own in the accompanying drawings of which:

Fig. '1 shows a side elevation of a complete device, partly in section.

Fig. 2 is a face view of the device shown V in F g. 1.

Fig. 3 is a perspective view of a modified form of the device.

, Fig. 4 is another form of my device embod ing my invention.

ig. 5 is another modification thereof. Fi 6 is still another modified form of my evice.

My device comprises in general a centrally arranged hollow shaft through which. in-

secticide is passed, and in communication;

with the interior of which are connected a plurality of spray nozzles which are ar-.

of insecticides may be pro-@fhat produce a w irling of finely divided preferred embodiment of my invention, 10

represents a power shaft, which is rotatably mounted in standards 11, and driven b a belt 12. A ropeller shaft 13 is connecte to the power s aft 10 preferably by means of a universal joint 14. The shaft 13 is vided with a central passageway 15. w ich extends from the outer end thereof through a portion of its length. A plurality of radially arranged apertures 16 are provided at the inner end of the passageway 15 and serve as means of commumcation to the passa eway from the exterior of the shaft. A ho low ring 17 is arranged about the part of the shaft where the apertures 16 are provided, and it is rotatably held in position by any suitable means such as the collars 18. A hose 19 is attached to an extension 20 on the ring, which is provided with an aperture 21, communicatin with the interior of the ring, whereby t e insecticide .is conducted thereto. The outer end of the shaft 13 is preferably provided with a flange course of the fog in an 22 to which is secured a fan 23. This fan is provided with a central hub 24 having a recess 25 formed therein, and also with a plurality of blades 26.

A ring 27, having a fluid passageway 28, is made preferably an integral part of the blades 26. Two or more of the blades 26 are provided each with a fluid passagewa 29. These passageways are preferably ra ially arranged and connect the recess 25 in the hub with the annular fluid passageway 28 of the ring. A plurality of spray or atomizing nozzles 30 are arranged at suitable intervals upon the ring 27 and are in communication with the space 28 thereof.

A counterweight is provided for balancing the propeller shaft 13 and the fan 23, and it is suitably connected to the hollow ring 17. This provides means whereby the fan may be moved so as to direct the general desired direction.

In the form of invention shown in Fig. 3 the fluid ring of the form of Figs. 1 and 2 has been omitted, and each of the fan blades is provided with a radial fluid passageway 41 which connects with the hollow shaft 42 of the fan. A spray nozzle 43 is attached to each of the blades, and is in communication with the outer end of the assageway 41.

In Fig. 4 I have shown a orm of invention in which a fan is provided, having blades 44, each attached to a central hub 45, carried by the hollow shaft 46. The fluid is conducted to the nozzles 47 preferably by means of pipes 48, which have their lower ends connected with the hub 45 and in communication with the passageway of the shaft 46.

'In Fig. 5 I show a form of invention similar to that in Fig. 4, in which the fan has been omitted. As in Fig. 4, 47 are the spray nozzles which are connected to the v hub 45 of the hollow shaft 46 by means of pipes 48.

n Fig. 6 I show a form of fan similar to that shownin Fig. 3, in which the spray nozzles 49 are arranged near the endsof the fan blades 50 and arein' open communication with the hollow shaft 51 by meansof suitable passageways (not shown). Surrounding the fan, in this form of the invention, is'a casing 52. This casin serves to give more positive direction to t e flow of the fog produced by the device, and it may be either attached to the outeredges of the blades 50, and rotatable therewith, or it may be a separate part, stationarily arranged and su orted around the fan.

e action produced by the different forms of "the device herein described is similar and for convenience I will limit the de scription of operation to'the forms shown in Fi 1 and 2. I 1 fifwill be clear that when an insecticlde is supplied through the hose 19,- under a comparatively slight pressure, the ring l7 will be filled with the insecticide and it will be caused to flow through the apertures 16 into thepassageway 15 in, the propeller shaft 13 and into the recess 25 of the fan 23. As the fan is rotated at a high velocity, the fluid will be forced outwardly through the a ertures 29 and into the ring 28. From ere it will passthrough the spray nozzles 30 and will be forced with great velocity into the air. As before indicated, it is necessary that the fluid coming from the pipe 19 be under only a comparatively slight pressure,

because the centrifugal force produced by the rapidly revolving fan will draw the fluid through the propeller shaft and force it outwardly with suflicient pressure to produce eflicient atomization of the fluid. Furthermore, the rapidly rotating nozzles, as they move through the air, produce an air suction on the discharged insecticide which greatly assists in the atomization thereof. Also, this movement of the nozzles through the air produces a suction upon the insecticide which serves to increase the pressure produced by the centrifugal force.

While I have shown the use of a universal joint in Fig. 1, it is obvious that the entire apparatus, with the motive power, may be mounted upon an adjustable platform, and the same result obtained. These and other modifications of the details herein shown and described may be made without departing from the spirit of my invention or the scope of the appended claims.

Having thus described my i I claim is:

1. A spraying apparatus comprising low shaft, forwardly directed radia ly arranged atomizing nozzles carried by the shaft, means for producing pressure upon the insecticide being sprayed, means for rotatihg said shaft to create centrifugal action upon the insecticide supplied to said nozzles, and means for universally adjusting the angular position of the apparatus,

nvention, what a hol- A whereby the atomized liquid is forced in any desired direction.

2. An insecticide spraying apparatus comprising a hollow shaft, a fluid chamber carried by said shaft adjacent one end thereof,

subject to centrifugal action and sprayed from said nozzles at increased pressure. 7

3. An insecticide spraying apparatus comprising a hollow shaft, a fluid chamber carried b said shaft adjacent one end thereof, radially disposed conduits connected to'said fluid chamber and extendingbe yond said shaft, forwardly directed spray nozzles on shaft whereby the insecticide is subject to the outer ends of said conduitsyfan blades centrifugal action and sprayed from said fixed tothe hollow shafit and extending parnozzles at increased pressure. 1 allel with and rearwardly of the plane of the In testimony whereof, I have hereunto l spray nozzles, means for supplying an insigned my name.

sectic-ide to said hollow shaft under low pressure and means for rotating said hollow 1 ARTHUR B. HULL. 

